Window frame extrusion



FIG. 1 is a perspective cross sectional view of a window frame extrusion showing the new ornamental design;

FIG. 2 is a fragmentary left side elevational view thereof;

FIG. 3 is a fragmentary front elevational view thereof;

FIG. 4 is a fragmentary top plan view thereof;

FIG. 5 is a fragmentary rear elevational view thereof; and,

FIG. 6 is a fragmentary bottom plan view thereof. 

The ornamental design for a window frame extrusion, as shown and described. 